Ile jest wszystkich par (x,y), gdzie x ∈ A i y ∈ B, jeśli:
a) A = {2,4,8,16,32}, B = {-3,-2,-1,0,1,2,3},
b) A - zbiór dzielnoków liczby 24, B - zbiór dzielników liczby 100?
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a)
N - liczba par
N = 5*7 = 35
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b)
A = D24 = { 1,2,3,4,6,8,12,24}
B = D100 = { 1,2,4,5,10,20,25,50,100 }
N = 8*9 = 72
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